1N4728 THRU 1N4764
ZENER DIODES
FEATURES
DO-41 Glass
♦
Silicon Planar Power Zener Diodes
♦
For use in stabilizing and clipping circuits with
high power rating.
♦
Standard Zener voltage tolerance is ±10%. Add
suffix “A” for ±5% tolerance. Other Zener voltages and
tolerances are available upon request.
♦
These diodes are also available in the MELF case with type
designation ZM4728 thru ZM4764
max. .161 (4.1)
min. 1.102 (28.0)
min. 1.102 (28.0)
max.
∅
0.102 (2.6)
Cathode
Mark
max.
∅
0.034 (0.86)
MECHANICAL DATA
Case:
DO-41 Glass Case
Weight:
approx. 0.35 g
Dimensions in inches and (millimeters)
MAXIMUM RATINGS
Ratings at 25°C ambient temperature unless otherwise specified.
SYMBOL
VALUE
UNIT
Zener Current (see Table “Characteristics”)
Power Dissipation at T
amb
= 25°C
Junction Temperature
Storage Temperature Range
P
tot
T
j
T
S
1.0
(1)
175
– 65 to +175
Watts
°C
°C
Characteristics at Tamb = 25 °C
SYMBOL
MIN.
TYP.
MAX.
UNIT
Thermal Resistance
Junction to Ambient Air
Forward Voltage
at I
F
= 200 mA
R
thJA
–
–
170
(1)
°C/W
V
F
–
–
1.2
Volts
NOTES:
(1) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature
12/3/98
1N4728 THRU 1N4764
ELECTRICAL CHARACTERISTICS
Ratings at 25°C ambient temperature unless otherwise specified.
Type
1N4728
1N4729
1N4730
1N4731
1N4732
1N4733
1N4734
1N4735
1N4736
1N4737
1N4738
1N4739
1N4740
1N4741
1N4742
1N4743
1N4744
1N4745
1N4746
1N4747
1N4748
1N4749
1N4750
1N4751
1N4752
1N4753
1N4754
1N4755
1N4756
1N4757
1N4758
1N4759
1N4760
1N4761
1N4762
1N4763
1N4764
Nominal
Zener
voltage
(3)
at
I
ZT
V
Z
V
3.3
3.6
3.9
4.3
4.7
5.1
5.6
6.2
6.8
7.5
8.2
9.1
10
11
12
13
15
16
18
20
22
24
27
30
33
36
39
43
47
51
56
62
68
75
82
91
100
Test
current
Maximum Zener impedance
(1)
Maximum
reverse leakage current
at V
R
V
1
1
1
1
1
1
2
3
4
5
6
7
7.6
8.4
9.1
9.9
11.4
12.2
13.7
15.2
16.7
18.2
20.6
22.8
25.1
27.4
29.7
32.7
35.8
38.8
42.6
47.1
51.7
56.0
62.2
69.2
76.0
Surge
current
at
T
A
= 25°C
I
R
mA
1380
1260
1190
1070
970
890
810
730
660
605
550
500
454
414
380
344
304
285
250
225
205
190
170
150
135
125
115
110
95
90
80
70
65
60
55
50
45
I
ZT
mA
76
69
64
58
53
49
45
41
37
34
31
28
25
23
21
19
17
15.5
14
12.5
11.5
10.5
9.5
8.5
7.5
7.0
6.5
6.0
5.5
5.0
4.5
4.0
3.7
3.3
3.0
2.8
2.5
Z
ZT
at I
ZT
Ω
10
10
9
9
8
7
5
2
3.5
4.0
4.5
5.0
7
8
9
10
14
16
20
22
23
25
35
40
45
50
60
70
80
95
110
125
150
175
200
250
350
Z
ZK
Ω
400
400
400
400
500
550
600
700
700
700
700
700
700
700
700
700
700
700
750
750
750
750
750
1000
1000
1000
1000
1500
1500
1500
2000
2000
2000
2000
3000
3000
3000
at
I
ZK
mA
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
1.0
0.5
0.5
0.5
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
0.25
Maximum
regulator
current
(2)
I
ZM
mA
276
252
234
217
193
178
162
146
133
121
110
100
91
83
76
69
61
57
50
45
41
38
34
30
27
25
23
22
19
18
16
14
13
12
11
10
9
I
R
µA
100
100
50
10
10
10
10
10
10
10
10
10
10
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
5
NOTES:
(1) The Zener impedance is derived from the 1KH
Z
AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (I
ZT
or I
ZK
)
is superimposed on I
ZT
or I
ZK
. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units
(2) Valid provided that electrodes at a distance of 10mm from case are kept at ambient temperature
(3) Measured under thermal equilibrium and DC test conditions
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